Possibly the most time consuming install I did was installing Xenix on a bunch of Intel i310 systems. Xenix was a "secondary" OS for these systems, the main OS being iRMX. Xenix for these systems was distributed on 5.25" floppies. Lots and lots of floppies... They came in a 3-ring binder, many pages of floppies... We also had a couple of i380 systems, Xenix for those came on 8" floppies... That was time consuming, but it was just manual labor. The most unpleasasnt install I can recall was AIX 2.2.1 on the IBM-PC/RT. Which also was really (under the covers) Interactive UNIX, with some other stuff mixed in. Not only was this also time-consuming with a binder full of 5.25" floppies, but my recollection is that there were too many opportunities to make a tiny little mistake during the install and have to start all over again. --Pat.